Amulet of Fortune Prevailing

This delicate gold amulet is suspended from a fine gold chain and set with three aventurines.

You can activate an amulet of fortune prevailing to reroll a saving throw. You must activate this ability before the success or failure of the saving throw has been determined, and you must use the second result, even if it's lower. You can't use this ability if you have already rerolled the save for any reason.